Results 41 to 50 of about 6,070 (214)

Evaluation of an anthropomorphic ion chamber and 3D gel dosimetry head phantom at a 0.35 T MR-linac using separate 1.5 T MR-scanners for gel readout

Zeitschrift für Medizinische Physik, 2022
Purpose: To date, no universally accepted technique for the evaluation of the overall dosimetric performance of hybrid integrated magnetic resonance imaging (MR) – linear accelerators (linacs) is available. We report on the suitability and reliability of
Lukas Nierer, Florian Kamp, Michael Reiner, Stefanie Corradini, Moritz Rabe, Olaf Dietrich, Katia Parodi, Claus Belka, Christopher Kurz, Guillaume Landry   +9 more
doaj   +1 more source

First-in-human technique translation of oxygen-enhanced MRI to an MR Linac system in patients with head and neck cancer [PDF]

, 2023
BACKGROUND AND PURPOSE: Tumour hypoxia is prognostic in head and neck cancer (HNC), associated with poor loco-regional control, poor survival and treatment resistance.
Berks, Michael, Bristow, Robert G, Buckley, David L, Cheung, Susan, Choudhury, Ananya, Clough, Abigael, Datta, Anubhav, Dubec, Michael J, Eccles, Cynthia L, Gaffney, John, Hague, Christina, Hoskin, Peter J, Little, Ross A, Matthews, Julian C, McHugh, Damien J, McPartlin, Andrew, O'Connor, James PB, Parker, Geoff JM, Porta, Nuria, van Herk, Marcel   +19 more
core  

Evaluation of single-isocenter multiple-target IMRT using 1.5T Elekta Unity MR-guided linear accelerator for stereotactic radiosurgery of multiple brain metastases

Journal of Radiation Research and Applied Sciences
Purpose: To assess the dosimetric performance of using the 1.5T Elekta Unity magnetic resonance (MR)-guided linear accelerator (MR-Linac) for intracranial single-isocenter, multiple-target stereotactic radiosurgery (SRS).
Shiru Zou, An Li, Hang Yu, Qing Xiao, Shipai Zhu, Jinrong He, Weige Wei, Xianhu Zeng, Jialu Lai   +8 more
doaj   +1 more source

MR‐Linac guided adaptive stereotactic ablative body radiotherapy for recurrent cardiac sarcoma with mitral valve bioprosthesis – a case report

Journal of Medical Radiation Sciences, 2023
We present the first case in the literature of a 78‐year‐old woman with recurrent cardiac sarcoma adjacent to a bioprosthetic mitral valve treated with magnetic resonance linear accelerator (MR‐Linac) guided adaptive stereotactic ablative body ...
Vikneswary Batumalai, Madeline Carr, Michael Jameson, David Crawford, Urszula Jelen, Claire Pagulayan, Tania Twentyman, Angela Hong, Jeremy de Leon   +8 more
doaj   +1 more source

Development of a hybrid magnetic resonance/computed tomography-compatible phantom for magnetic resonance guided radiotherapy [PDF]

, 2020
The purpose of the present study was to develop a hybrid magnetic resonance/computed tomography (MR/CT)-compatible phantom and tissue-equivalent materials for each MR and CT image.
Baek, Hyeon-Man, Choe, Bo-Young, Kim, Min-Joo, Lee, Seu-Ran, Song, Kyu-Ho, Suh, Tae Suk   +5 more
core   +1 more source

Comparison of Intensity Modulated Radiotherapy Treatment Plans Between 1.5T MR-Linac and Conventional Linac

Technology in Cancer Research & Treatment, 2021
In this study, we assess the dosimetric qualities and usability of planning for 1.5 T MR-Linac based intensity modulated radiotherapy (MRL-IMRT) for various clinical sites in comparison with IMRT plans using a conventional linac.
Shouliang Ding MS, Yongbao Li PhD, Hongdong Liu PhD, Rui Li PhD, Bin Wang PhD, Jun Zhang PhD, Yan Chen PhD, Xiaoyan Huang MS   +7 more
doaj   +1 more source

4D-MRI driven MR-guided online adaptive radiotherapy for abdominal stereotactic body radiation therapy on a high field MR-Linac: Implementation and initial clinical experience

Clinical and Translational Radiation Oncology, 2020
Background and purpose: In this report, we describe our implementation and initial clinical experience using 4D-MRI driven MR-guided online adaptive radiotherapy (MRgOART) for abdominal stereotactic body radiotherapy (SBRT) on the Elekta Unity MR-Linac ...
Eric S. Paulson, Ergun Ahunbay, Xinfeng Chen, Nikolai J. Mickevicius, Guang-Pei Chen, Christopher Schultz, Beth Erickson, Michael Straza, William A. Hall, X. Allen Li   +9 more
doaj   +1 more source

Individual elective lymph node irradiation for the reduction of complications in head and neck cancer patients (iNode): A phase-I feasibility trial protocol

Clinical and Translational Radiation Oncology, 2023
Introduction: The long-term complication rate in head-and-neck squamous cell carcinoma (HNSCC) patients caused by radiotherapy (RT) can be decreased by restricting elective neck irradiation (ENI) from large adjacent lymph node levels to only individual ...
Floris C.J. Reinders, Mischa de Ridder, Patricia A.H. Doornaert, Cornelis P.J. Raaijmakers, Marielle E.P. Philippens   +4 more
doaj   +1 more source

MRI for Lung Cancer Management: Any Closer to Clinical Application?

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Management of lung cancer (LC) encompasses screening, diagnosis, staging, radiotherapy planning and guidance, therapy monitoring and surveillance. Across these domains, magnetic resonance imaging (MRI) offers a range of morphological and functional imaging capabilities—including diffusion‐weighted imaging (DWI), dynamic contrast‐enhanced (DCE)
Juergen Biederer, Liisa L. Bergmann, Jeanne B. Ackman, Bruno Hochhegger, Lea Azour, Simon M. F. Triphan, Julien Dinkel, Yoshiharu Ohno, Yoshiyuki Ozawa, Edwin J. R. van Beek, Lena Wucherpfennig   +10 more
wiley   +1 more source

Australian Society of Medical Imaging and Radiation Therapy Image Registration in Radiation Therapy Position Paper

Journal of Medical Radiation Sciences, EarlyView.
The ASMIRT Image Registration Working Party outlines the critical role of radiation therapists in performing, assessing and documenting rigid and deformable image registration across treatment planning, delivery and adaptive workflows. The position paper emphasises consistent nomenclature, robust QA processes, strong collaboration with diagnostic ...
Tamara Barry, Huong Nguyen, Laurel Schmidt, Kate Stewart, Nigel Anderson   +4 more
wiley   +1 more source